I'd prefer to avoid adding more and more data in this class. Adding functions is not a problem. You could add previous penetration to MindlinPhys, it would make more sense since only this sort of interactions need the value. Deriving a new Ig from ScGeom is maybe better in terms of design, it seems a bit overkill to me though.
Bruno Ok, no problem, I need it for energy computation. I was asking because I thought it could have been similar to previousNormal, but in fact that is needed to all the laws. Btw, in ScGeom are you getting rid completely of rotateAndGetShear function? Or would you think to keep it somehow? Chiara
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